Luminaire arm mount



FIG. 1 is a perspective view for a luminaire light fixture showing our design;

FIG. 2 is a side view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

The broken line showing of a luminaire is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a luminaire arm mount, as shown and described. 